Need help for addition of cells

Here is portion ofmy code

alto = cell(1, length(keysa));
for i = 1:length(keysa)   % The for loop continues till number of Keys
   alto{i} = note(keysa(i), dura(i)); function is called
end

treb = cell(1, length(keyst));  
for i = 1:length(keyst)   
   treb{i} = note(keyst(i), durt(i));  % function is called
end

Now what i want is that to make a final cell array in which treb{i} and alto{i} are added and stored one by one i mean

final{1}= treb{1}+alto{1}
final {2}= treb{2} +alto{2}

so final is addition of both two.

I tried this one but gave error

final=cell(1,length(keyst)
for k=1:length(keyst)
    final{i}=alto(i)+treb(i);
end

Answer 1

[Walter Roberson]

final=cell(1,length(keyst))
for k=1:length(keyst)
    final{i}=alto{i}+treb{i};
end

Or

final = cellfun(@plus, alta, treb, 'Uniform', 0);

Answer 2

[moonman]

I am getting this answer when i used ur first option

 Undefined function or method 'plus' for input arguments of type 'cell'.

Error in ==> exp2 at 53 final{k}=alto{k}+treb(k)+bass{k};

[Fangjun Jiang]

Walter forgot one right parenthesis in the first line. You can add it yourself.

[Walter Roberson]

The first line needed a ')'. I have edited it in to place.

[Walter Roberson]

Walter copied the line as-is from the original posting...

[moonman]

Neither is second option is working, the error is

??? Error using ==> plus

Matrix dimensions must agree.

Error in ==> exp2 at 56

final = cellfun(@plus, alto, treb,'Uniform', 0);

[moonman]

Yes i have placed the missin bracket now but error remains same for both options

what can be possibilities

length of treb and alto is same

[Walter Roberson]

length of treb and alto might be the same, but each of them is a cell array possibly containing a vector or matrix. Do the sizes of those agree?

Try this:

find(cellfun(@(A,T) ~(isequal(size(A),size(T)) || numel(A) == 1 || numel(T) == 1), alto, treb))

If any numbers are printed out, then they are each indices K such that alto{K} cannot be added to treb{K} because the sizes are different.

Answer 3

[moonman]

Can anybody help me for this solution

[Walter Roberson]

I am doing multiple things at the same time; I can't always notice and test and write a response within 8 minutes. :(

Answer 4

[moonman]

Ok Walter Thanks for halping , when i use ur command, i get this answer

298 299 301 302 303 304 306 307 308 309 310 311 312

What does this mean

there are 313 cells in each alto and treb and length ofalto andtreb is same? howto overcome this problem

Answer 5

[moonman]

Ok now i have removed those cells which were creating error

now with the command

find(cellfun(@(A,T) ~(isequal(size(A),size(T)) numel(A) == 1 numel(T) == 1), alto, treb))

i get

ans =

   Empty matrix: 1-by-0

Now the command

final = cellfun(@plus, alto, treb, 'Uniform', 0);

is also executing

but when i use finally this command

soundsc(final,fs)

it gives error

??? Undefined function or method 'min' for input arguments of type 'cell'.

Error in ==> soundsc at 27 xmin = min(x(:));

*whereas if i do

soundsc(final{3},fs)

or soundsc(final{68},fs)

it works

individually*

[moonman]

the command at 27 are

alto = cell(1, length(keysa));

for i = 1:length(keysa)

alto{i} = note(keysa(i), dura(i)); %function id called

end

[Walter Roberson]

Shrug. You never did indicate what you want the additions to mean, so I just followed your outline, which is not going to produce a single array suitable for using in soundsc()

If you are attempting to do additive synthesis of sound, then you need to define the time relationships between the various components.

If it happens that the alto and treb of each pair are to be played at the same time, but only one pair at a given time, and no pause between adjacent pairs, then you want

fullsound = horzcat(final{:});

and then soundsc(fullsound,fs);

If you get a dimension error when you try that, change the horzcat() to vertcat().

Answer 6

[moonman]

Thanks a lot Walter for ur constant help the problem is solved i forgot to concatinate

by adding this my problem is solved and music is being played by addition of alto and treeble

tone = cat(2, final{:});

thanks a lot Walter Once again u are great